Multi-Model Parallel Computing

并行编程中的现有技术的特征在于 各种各样的流程模型、通信机制和模式 分享和保护。 经验表明，没有一种单一的模式 在任何情况下，并行性就足够了。 不幸的是， 传统的操作系统倾向于通过 将其嵌入内核。 克服这一局限性是 Psyche操作系统的主要目标。 预计在 Psyche将允许每个程序员使用最合适的模型 为手头的任务，并将打开以前不可用 在单个应用程序中使用多个模型的机会。 本研究以Psyche作为多模型并行的实验平台 计算--评估Psyche用户界面 使多模型编程成为可能，并确定 用户级工具、技术和约定， 让它变得实用。 在现有的多处理器上构建 Psyche实现，逐步变得更加复杂的用户级 计划，从共存但独立的模型开始， 并行性和工作到系统服务器， 许多类型的客户端，以及使用多种模型的应用程序 在实验中将使用内部并行性。 后期 这项工作的各个阶段，我们部门计算机视觉方面的专业知识， 机器人技术和规划小组将被提请建设 大型多模型反应式应用程序。

The state of the art in parallel programming is characterized by a wide variety of process models, communication mechanisms, and patterns of sharing and protection. Experience suggests that no single model of parallelism will suffice in every case. Unfortunately, traditional operating systems tend to enforce a single model by embedding it in the kernel. Overcoming this limitation is the principal goal of the Psyche operating system. It is expected that Psyche will allow each programmer to use the most appropriate model for the task at hand, and will open up previously unavailable opportunities to use multiple models within a single application. This research focuses on Psyche as a testbed for multi-model parallel computing -- evaluating the extent to which the Psyche user interface makes multi-model programming possible, and determining the sorts of user-level tools, techniques, and conventions that are required to make it practical. Building on an existing multiprocessor implementation of Psyche, progressively more complicated user-level programs, beginning with coexisting but independent models of parallelism and working up to system servers that can interact with many kinds of clients, and applications that use more than one model of parallelism internally will be used in experiments. In the later phases of this work, expertise in our department's computer vision, robotics, and planning groups will be drawn on for the construction of large, multi-model reactive applications.